// $Id: Main.java 225 2007-02-27 14:56:40Z huijzer $

/*    
	Aoide is a web-based music catalog using the Spring Framework.
	Copyright (C) 2006  Arjan Huijzer

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
    
    You can contact Arjan Huijzer by sending an e-mail to huijzer@gmail.com.
*/


package org.aoide.shell;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.aoide.shell.command.Command;
import org.aoide.shell.command.CommandFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Main {

	public static void main(String[] args) {
		new Main().run();		
	}
	
	public void run() {
		boolean acceptNewCommand = true;
		
		while (acceptNewCommand) {
			
			try {
			
				// Display prompt
				System.out.print(Constants.PROMPT);
			
				// Read input
				String input = readInput();
			
				// Parse input
				Command cmd = parseInput(input);
			
				ApplicationContext context = new ClassPathXmlApplicationContext(new String[] {"applicationContext.xml"});
				
				// Execute command
				acceptNewCommand = cmd.execute(context);
		
			} catch (ShellException e) {
				System.out.println(e.getMessage());
			}
			
		}
		
	}
	
	private String readInput() {

	      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

	      String input = null;
	      try {
	         input = br.readLine();
	      } catch (IOException ioe) {
	         ioe.printStackTrace();
	         System.exit(1);
	      }
	      
	      return input;
	}
	
	private Command parseInput(String input) throws ShellException {
		Command cmd = null;
		
		String words[] = input.split("\\s");
		List<String> arguments = new ArrayList<String>( Arrays.asList(words) );
		String command = arguments.remove(0);
		
		cmd = CommandFactory.createCommand(command, arguments);

		return cmd;
	}

}
